Question: What is the highest level of judicial authority in the institution of the European Union?
Paraphrase: What is the most elevated level of legal specialist within the institution of the European Union?
SPARQL (Wikidata):  select distinct ?obj where { wd:Q458 wdt:P209 ?obj . ?obj wdt:P31 wd:Q748720 } 
Answer: Court of Justice of the European Union